Justin Bieber and Selena Gomez Reunite at Her L.A. Home

"Justin Bieber vistied Selena Gomez at her house this afternoon," an onlooker reveals.

The Biebs — who is briefly back in the U.S. before heading back out on tour in Germany soon — stopped by his ex-girlfriend's home around 3:30 p.m., leaving his security team and driver waiting outside.

Justin reportedly stayed inside Selena's home for about an hour before departing.

Frankly, we're a bit shocked by this development, even if they were just talking as friends.